The first lady's speech at Monday night's Democratic National Convention brought down the house and had a few people in the audience shedding tears. But there was one person who couldn't have been prouder of Michelle Obama, and that was President Barack Obama.

With one simple tweet, the president expressed his love for his wife.

And of all the tweeting that occurred Monday night, it was the only one to go viral.

With almost 130,000 retweets and counting, the president, unlike Donald Trump, uses his 140 characters wisely.